CA1085111A - Method of constructing reinforced concrete bridges and bridges constructed thereby - Google Patents
Method of constructing reinforced concrete bridges and bridges constructed therebyInfo
- Publication number
- CA1085111A CA1085111A CA293,088A CA293088A CA1085111A CA 1085111 A CA1085111 A CA 1085111A CA 293088 A CA293088 A CA 293088A CA 1085111 A CA1085111 A CA 1085111A
- Authority
- CA
- Canada
- Prior art keywords
- arch
- concrete
- reinforcing
- exterior
- bridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D4/00—Arch-type bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
In a method of constructing a reinforced concrete bridge a supporting arch is erected which comprises an arched centre part extending between spaced supports without intermediate support which forms a supporting reinforcement intended to be incorporated in the concrete of the final bridge structure.
Shuttering is placed in position on the arch and the concrete poured to embody the supporting reinforcement and constitute the deck of the bridge. The resultant deck is formed by a ribbed slab, by girders connected by a slab, or by at least one box. After the concrete has hardened the remaining exterior part of the arch is removed, and if required additional reinforcement may be embodied in the concrete.
In a method of constructing a reinforced concrete bridge a supporting arch is erected which comprises an arched centre part extending between spaced supports without intermediate support which forms a supporting reinforcement intended to be incorporated in the concrete of the final bridge structure.
Shuttering is placed in position on the arch and the concrete poured to embody the supporting reinforcement and constitute the deck of the bridge. The resultant deck is formed by a ribbed slab, by girders connected by a slab, or by at least one box. After the concrete has hardened the remaining exterior part of the arch is removed, and if required additional reinforcement may be embodied in the concrete.
Description
MET~IOD OF CONSTRUCTING R~INFORCED CONCRET~ RIDGES
BACKG~OUND OF THE INVENTION
Field o~f the Invention This invention rela-tes to a meth~d of constructing reinforced concre-te bridges and i-t includes brid~es constructed by the method.
Description of the Prior Art The conventional method of constructing such bridges ; utilises arches serving as a lower framework suppoxt for building the bridge in reinforced concrete. Such arches constitute scaffolding which is generally supported on the adjoining banks, - particularly on the abutments, and on the final piers, and also on pilework arranged between -the Einal piers. This method of ; procedure presents many disadvantages, especially with bridges to be constructed over navigable waterways. In fact, the suppor-t structure to be built over the river necessitates recourse to caissons, temporary pilework, etc., which constitute obstacles to traffic on the reach of the river and which may not satisfy the requirements with regard to tidal clearance and the waterlogged surface of the site. Even if the bridge is to be constructed over waterways which are not navigable, the construction of the supporting structure generally necessitates pilework which may be undesirable because of the attendant obstacle to the free circulation of the water. Lastly, and whatever the field of application, the use of arches as a supporting structure is a procedure which entails considerable delays and costs and which, even in special cases, it may be virtually impossible to achieve because of the nature of the terrain, the spans to be obtained, etc.
It is theoretically possible to imagine a method of construction entailing recourse to a provisional construction l~.;, :. .. . . . . .. . .
~35~
comprising braced pylons mounted on the piers of the ~xidge to be built ar.d supporting a horizon-tal girder which supports, in its turn, a lower scaffolcling. The lower scaffold:ing, attached to the horizontal girder, is intended to support framework by means of stays which pass through the superstructure of the bridge and, in particular, the deck.
Not only would such a method be difficult to carry out because of the considerable height of the pylons, but it would pose very complex problems related, in particular, to the difficulties of overcoming the deformation of the support frame-work during concreting. The use of stays passing through the superstructure also constitutes a disadvantage.
;: SUMM~RY OF THE INVENTION
The purpose of the invention is to provide a remedy for the aforementioned disadvantages by means of a simple and rapid method of constructing bridges without entailing building costs greater than those of conventional methods. In addition, the invention aims at providing a method which can be adapted to the particular geometry of the bridge, to the possibly unfavourable nature of the obstacle to be crossed and to the implantation of the bridge in the site.
In accordance with the present invention there is provided ~;~ a method of constructing reinforced concrete bridges, including the steps of:
~ "
providing a supporting arch having a reinforcing part ` intended to be embedded into the concrete and an exterior part ` intended to be taken down after the concrete has set, erecting the supporting arch on a pair of horizontally spaced supports so that the arch is supported on and extends between the spaced supports without intermediate support,
BACKG~OUND OF THE INVENTION
Field o~f the Invention This invention rela-tes to a meth~d of constructing reinforced concre-te bridges and i-t includes brid~es constructed by the method.
Description of the Prior Art The conventional method of constructing such bridges ; utilises arches serving as a lower framework suppoxt for building the bridge in reinforced concrete. Such arches constitute scaffolding which is generally supported on the adjoining banks, - particularly on the abutments, and on the final piers, and also on pilework arranged between -the Einal piers. This method of ; procedure presents many disadvantages, especially with bridges to be constructed over navigable waterways. In fact, the suppor-t structure to be built over the river necessitates recourse to caissons, temporary pilework, etc., which constitute obstacles to traffic on the reach of the river and which may not satisfy the requirements with regard to tidal clearance and the waterlogged surface of the site. Even if the bridge is to be constructed over waterways which are not navigable, the construction of the supporting structure generally necessitates pilework which may be undesirable because of the attendant obstacle to the free circulation of the water. Lastly, and whatever the field of application, the use of arches as a supporting structure is a procedure which entails considerable delays and costs and which, even in special cases, it may be virtually impossible to achieve because of the nature of the terrain, the spans to be obtained, etc.
It is theoretically possible to imagine a method of construction entailing recourse to a provisional construction l~.;, :. .. . . . . .. . .
~35~
comprising braced pylons mounted on the piers of the ~xidge to be built ar.d supporting a horizon-tal girder which supports, in its turn, a lower scaffolcling. The lower scaffold:ing, attached to the horizontal girder, is intended to support framework by means of stays which pass through the superstructure of the bridge and, in particular, the deck.
Not only would such a method be difficult to carry out because of the considerable height of the pylons, but it would pose very complex problems related, in particular, to the difficulties of overcoming the deformation of the support frame-work during concreting. The use of stays passing through the superstructure also constitutes a disadvantage.
;: SUMM~RY OF THE INVENTION
The purpose of the invention is to provide a remedy for the aforementioned disadvantages by means of a simple and rapid method of constructing bridges without entailing building costs greater than those of conventional methods. In addition, the invention aims at providing a method which can be adapted to the particular geometry of the bridge, to the possibly unfavourable nature of the obstacle to be crossed and to the implantation of the bridge in the site.
In accordance with the present invention there is provided ~;~ a method of constructing reinforced concrete bridges, including the steps of:
~ "
providing a supporting arch having a reinforcing part ` intended to be embedded into the concrete and an exterior part ` intended to be taken down after the concrete has set, erecting the supporting arch on a pair of horizontally spaced supports so that the arch is supported on and extends between the spaced supports without intermediate support,
- 2 -placing shuttering in posi-tio~ on the arch, and embodying at least -the reinforcing part of -the arch in concrete to constitute -the dec~ of the bridge which is formed by a ribbed slab, by girders connected by a slab or by at least one box, said part of the arch embodied in the concrete providing supporting reinforcement in the final bridge structure.
Precast concrete slabs may be placed, after erection of the arch, at the lower part of the reinforcing part, so as to serve as a bottom closure for the shuttering.
-~ 10 The precast slabs are placed in such a manner as to provide a platform allowing the remainder of the reinforced concrete superstructure of the work to be completed easily.
The invention also relates to a bridge obtained by this ; method, in which at least one part of the arch, having served in the construction of the work, is embodied in it after concreting, the steelwork thereof thus contributing to the strength of the bridge.
The method described is of particular interest in that it : offers the possibility of constructing box bridges easily, as it ; 20 permits the formwork of the lower slabs to be simplified by using precast concr~te slabs placed, after erection of the arch, at the lower part of the reinforcing part. In this way, a work platform is obtained enabling the remainder of the reinforced concrete superstructure to be easily completed.
; 25 With advantage, the part of the arch forming the rein~orcing part may comprise a series of lattices of the same shape as the bridge girders and resting on the final piers.
Said exterior part of the arch may be situated above or below the reinforcing part and is composed of lattice work in tall sections integral with the reinforcing part as incorporated in the concrete, the reinforcing and exterior parts forming an ,, ~ . .
~: : . . . . . . .
A.~
assembly with sufficient ri~idity to overcome the problem of deformation of the arch under the weight of the fresh concrete.
The integration of the two parts of the arch may be such that the latter consists of small one-piece girders for the exterior part and the reinforcing part, which necessitates cutting out the exterior part of the arch after the concrete of the superstructure has hardened.
It is equally possible for the two parts of the arch each composed of small girders to be bolted together, so that the exterior part can be simply dismounted after the concrete of the superstructure has hardened.
Other objects and features of the present invention will appear more fully below from the following detailed description considered in connection with the accompanying drawings which disclose one preerred embodiment of the invention. It is to be expressly understood, however, that the drawings are designed for purposes of illustration only and not as a definition of the limits of the invention, reference for the latter purpose being had to the appended claims.
. :;
2 0 BRIEF DES`CRIPTION OF THE DRAWINGS
,,, ~ . . .
Figure 1 illustrates a method of the present state of technology, using a conventional arch;
Figure 2 illustrates schematically the method of construction of the invention showing in side view a bridge under construction; and Figure 3 is a section on the line A - A in Figure 2.
DESCRIPTION-OF THE PREFERRED EMBODIMENT
:
In the conventional method of Figure 1 the construction ,.~
of a bridge 1 necessitates, in addition to the eventual piers 2,
Precast concrete slabs may be placed, after erection of the arch, at the lower part of the reinforcing part, so as to serve as a bottom closure for the shuttering.
-~ 10 The precast slabs are placed in such a manner as to provide a platform allowing the remainder of the reinforced concrete superstructure of the work to be completed easily.
The invention also relates to a bridge obtained by this ; method, in which at least one part of the arch, having served in the construction of the work, is embodied in it after concreting, the steelwork thereof thus contributing to the strength of the bridge.
The method described is of particular interest in that it : offers the possibility of constructing box bridges easily, as it ; 20 permits the formwork of the lower slabs to be simplified by using precast concr~te slabs placed, after erection of the arch, at the lower part of the reinforcing part. In this way, a work platform is obtained enabling the remainder of the reinforced concrete superstructure to be easily completed.
; 25 With advantage, the part of the arch forming the rein~orcing part may comprise a series of lattices of the same shape as the bridge girders and resting on the final piers.
Said exterior part of the arch may be situated above or below the reinforcing part and is composed of lattice work in tall sections integral with the reinforcing part as incorporated in the concrete, the reinforcing and exterior parts forming an ,, ~ . .
~: : . . . . . . .
A.~
assembly with sufficient ri~idity to overcome the problem of deformation of the arch under the weight of the fresh concrete.
The integration of the two parts of the arch may be such that the latter consists of small one-piece girders for the exterior part and the reinforcing part, which necessitates cutting out the exterior part of the arch after the concrete of the superstructure has hardened.
It is equally possible for the two parts of the arch each composed of small girders to be bolted together, so that the exterior part can be simply dismounted after the concrete of the superstructure has hardened.
Other objects and features of the present invention will appear more fully below from the following detailed description considered in connection with the accompanying drawings which disclose one preerred embodiment of the invention. It is to be expressly understood, however, that the drawings are designed for purposes of illustration only and not as a definition of the limits of the invention, reference for the latter purpose being had to the appended claims.
. :;
2 0 BRIEF DES`CRIPTION OF THE DRAWINGS
,,, ~ . . .
Figure 1 illustrates a method of the present state of technology, using a conventional arch;
Figure 2 illustrates schematically the method of construction of the invention showing in side view a bridge under construction; and Figure 3 is a section on the line A - A in Figure 2.
DESCRIPTION-OF THE PREFERRED EMBODIMENT
:
In the conventional method of Figure 1 the construction ,.~
of a bridge 1 necessitates, in addition to the eventual piers 2,
3, 4 and 5, a certain number of auxiliary intermediate pileworks
- 4 -6 to 12. ~ ~ ~
In ~rinciple, construct;on of the areh 13 re~ting on the ; piers 2,3 and pileworlcs 6, 7 and 8 po5es f~w pr~blem~. On the other hand, construction of the arch 14, restin~ on piers 3 and 4 and pile~
works 9 and 10, and of the arch 15, resting on piers 4 and 5 and pile~lorks 11 ~nd 12, presents considerable dif~iculties if two navigable channels have to be kept betwee~ the pileworks. Con~
structio~ of these arches is necess~rily slow, onerous and hardly practical, if not impossible, for large spans.
In the method of constructio~ in accordance with the invention illustrated in Figures 2 and 3, a box bridge o~ variable height, constructed of reinforced concrete, i~ obtained by carrying out tbe following phases in turn.
; ~irstly, simultaneously w~th the construction of the arch in the workshop, the infrastructure of the work, con~istirl~ of two piers 22 and 23 and two abutment pier~ 21 and 24, i8 constructed o~
site.
re ~ rico~ fe~
The arch is then inetalled in position and, as described above, this is ef~ected either by pro~ding two parts7 that is to int~r~
say the exterior part 30B and the~part 30A to be incorporated i~
the final structure, which are detachable, ~or example by employing a sy~tem of bolt~, or by installing the arch without arrarlgin~ for tha kwo part~ which constitute it to be relatively detachable.
The arch constituted by the two parts 30A and ~OB rests, in the method of construction illu~trated, direGtly on the abutme~t6 and the piers, and the for~ of the part ~OA to be incorporated correspo~ds essentially to that foresee~ for the complete work.
HoweYer, if necessar~, other forms of construction differe~ from those illustrated are possible. In particular~ it ie possible not ~0 to have the arch re~ting directly o~ the piers a~d~or the abutment~9 .
~ ~~
:
or ~o ~dopt ~ form of th~ part ~0~ to be incorpor~tod in the co~cretc which i~ di~fcrcnt ~ro~ the ~cnoral shapo of tho bri~go~ :
In certain ca~e6, in addition to the part ~SOA to be inoorporated in the superstructure o~ the concrete and t:he upper exterior part 30B, it is possible to provide another exterior part, this time lower, it boi~g understood that all the ext.erior parts are intended to be removed when the work i& completed.
After installation of the arch, precast slabs are placed ~: ~t the lower framework of the part 30A intended to be incorporated 10 in the concrete. This on the one hand provides a casi~g bottom ~or concreting the bridge and, on the other hand~ also providles the con-siderable advantage of forming a working platfor~ which allows the shuttering to be erected ~or the concrete in which will be incor-porated the part 30A of the arch provided for this purpose.
Complementary steel members~ constituting additional reinforcement~
may be added to the suppoxtin~ reinforcement provide~ by the part , ~
`:. 30A intended to be incorporated in the concrete of the brid~e to be .constructed.
Concreting is effected in the conventional manner, tha ~i~ishad arch being calculate~ to accommodate the deformatio~ o~
the ~huttering. Of rourse~ concreting must ba e~cted in such ~
way as not to throw out of balance the work in course o~ construc-tio~. In general, concreting i8 done progressively in suc¢essive ~ections, proceeding equally to the left and to the r~ght ~rom a pier and co~creting symmetrically with respect to the axi3 o~ the bridgeO ~he successive phases of concreti~e with a possible harde~-i~g &tage betwee~ each phase are pl~ned so as to take into a~count o /? S;~e r c~ f~or~ o ~f =w~#rihrtime and ~pace. In the ~ethod of constructio~ illus-trated, rein~orced concre-te boxes 32 are produced i~corpcrating the part of the arch 30A provided for this purpose.
~ ` .
S~
The -technical progress obtained by the invention rests on the fact tht the technique described in effect combines the advantages of metal bridges built ou-t from piers or abutments and those of reinforced concrete, particularly the advantages of economy of the latter.
Moreover, by making the part incorporated in the concrete act initially as a support for fresh concrete and then as rein-forcement for the concrete, this arch enables considerable savings to be made in the quantities of steel used.
The employment of the invention i5 especially advantageous:
1. when the time allowed for construction is short (in fact, assembly of the panels either in the workshop or at the work site allows the time required for erecting the arch in position to be considerably reduced), 2. when the great height of the piers would make much scaffold-ing necessary, 3. when the zones between piers are difficult of access:
rugged areas, marshy zones, rivers, inhabited zones, etc.
- The type of arch proposed may be adapted to all forms of reinforced concrete bridges. In particular, it enables to be ; done what until tbe present time has for pxactical reasons been excluded, that is to cross regions unsuitable for the installation of scaffolding with large spans of reinforced concrete.
Although preferred methods of carrying out the process for achieving the invention have been described, it should be under-stood, of course, that these have been given merely by way of illustration, in order to facilitate an understanding of the invention~ Consequently, numerous variations are possible, both in the conception of the bridge itself as in that of the arch, such modifications of the conception of the bridge, in particular, !,,: ~ ' .
. , ' , ~ ~ : , ` , '~ ' . . .
:':' . , ' ' ' . , . '' . "''. . ' . . ' .:
10~3Slll necessarily entailing adaptations of the Eorm and construction of the arch.
It should in addition be noted that the expression "arch"
as used herein is to be understood in i~s usual technical sense of scaffolding allowing bridge decks to be constructed, but that such : an arch does not necessarily have an arched or curved shape.
.
'~
`::
, .
In ~rinciple, construct;on of the areh 13 re~ting on the ; piers 2,3 and pileworlcs 6, 7 and 8 po5es f~w pr~blem~. On the other hand, construction of the arch 14, restin~ on piers 3 and 4 and pile~
works 9 and 10, and of the arch 15, resting on piers 4 and 5 and pile~lorks 11 ~nd 12, presents considerable dif~iculties if two navigable channels have to be kept betwee~ the pileworks. Con~
structio~ of these arches is necess~rily slow, onerous and hardly practical, if not impossible, for large spans.
In the method of constructio~ in accordance with the invention illustrated in Figures 2 and 3, a box bridge o~ variable height, constructed of reinforced concrete, i~ obtained by carrying out tbe following phases in turn.
; ~irstly, simultaneously w~th the construction of the arch in the workshop, the infrastructure of the work, con~istirl~ of two piers 22 and 23 and two abutment pier~ 21 and 24, i8 constructed o~
site.
re ~ rico~ fe~
The arch is then inetalled in position and, as described above, this is ef~ected either by pro~ding two parts7 that is to int~r~
say the exterior part 30B and the~part 30A to be incorporated i~
the final structure, which are detachable, ~or example by employing a sy~tem of bolt~, or by installing the arch without arrarlgin~ for tha kwo part~ which constitute it to be relatively detachable.
The arch constituted by the two parts 30A and ~OB rests, in the method of construction illu~trated, direGtly on the abutme~t6 and the piers, and the for~ of the part ~OA to be incorporated correspo~ds essentially to that foresee~ for the complete work.
HoweYer, if necessar~, other forms of construction differe~ from those illustrated are possible. In particular~ it ie possible not ~0 to have the arch re~ting directly o~ the piers a~d~or the abutment~9 .
~ ~~
:
or ~o ~dopt ~ form of th~ part ~0~ to be incorpor~tod in the co~cretc which i~ di~fcrcnt ~ro~ the ~cnoral shapo of tho bri~go~ :
In certain ca~e6, in addition to the part ~SOA to be inoorporated in the superstructure o~ the concrete and t:he upper exterior part 30B, it is possible to provide another exterior part, this time lower, it boi~g understood that all the ext.erior parts are intended to be removed when the work i& completed.
After installation of the arch, precast slabs are placed ~: ~t the lower framework of the part 30A intended to be incorporated 10 in the concrete. This on the one hand provides a casi~g bottom ~or concreting the bridge and, on the other hand~ also providles the con-siderable advantage of forming a working platfor~ which allows the shuttering to be erected ~or the concrete in which will be incor-porated the part 30A of the arch provided for this purpose.
Complementary steel members~ constituting additional reinforcement~
may be added to the suppoxtin~ reinforcement provide~ by the part , ~
`:. 30A intended to be incorporated in the concrete of the brid~e to be .constructed.
Concreting is effected in the conventional manner, tha ~i~ishad arch being calculate~ to accommodate the deformatio~ o~
the ~huttering. Of rourse~ concreting must ba e~cted in such ~
way as not to throw out of balance the work in course o~ construc-tio~. In general, concreting i8 done progressively in suc¢essive ~ections, proceeding equally to the left and to the r~ght ~rom a pier and co~creting symmetrically with respect to the axi3 o~ the bridgeO ~he successive phases of concreti~e with a possible harde~-i~g &tage betwee~ each phase are pl~ned so as to take into a~count o /? S;~e r c~ f~or~ o ~f =w~#rihrtime and ~pace. In the ~ethod of constructio~ illus-trated, rein~orced concre-te boxes 32 are produced i~corpcrating the part of the arch 30A provided for this purpose.
~ ` .
S~
The -technical progress obtained by the invention rests on the fact tht the technique described in effect combines the advantages of metal bridges built ou-t from piers or abutments and those of reinforced concrete, particularly the advantages of economy of the latter.
Moreover, by making the part incorporated in the concrete act initially as a support for fresh concrete and then as rein-forcement for the concrete, this arch enables considerable savings to be made in the quantities of steel used.
The employment of the invention i5 especially advantageous:
1. when the time allowed for construction is short (in fact, assembly of the panels either in the workshop or at the work site allows the time required for erecting the arch in position to be considerably reduced), 2. when the great height of the piers would make much scaffold-ing necessary, 3. when the zones between piers are difficult of access:
rugged areas, marshy zones, rivers, inhabited zones, etc.
- The type of arch proposed may be adapted to all forms of reinforced concrete bridges. In particular, it enables to be ; done what until tbe present time has for pxactical reasons been excluded, that is to cross regions unsuitable for the installation of scaffolding with large spans of reinforced concrete.
Although preferred methods of carrying out the process for achieving the invention have been described, it should be under-stood, of course, that these have been given merely by way of illustration, in order to facilitate an understanding of the invention~ Consequently, numerous variations are possible, both in the conception of the bridge itself as in that of the arch, such modifications of the conception of the bridge, in particular, !,,: ~ ' .
. , ' , ~ ~ : , ` , '~ ' . . .
:':' . , ' ' ' . , . '' . "''. . ' . . ' .:
10~3Slll necessarily entailing adaptations of the Eorm and construction of the arch.
It should in addition be noted that the expression "arch"
as used herein is to be understood in i~s usual technical sense of scaffolding allowing bridge decks to be constructed, but that such : an arch does not necessarily have an arched or curved shape.
.
'~
`::
, .
Claims (8)
1. A method of constructing reinforced concrete bridges, including the steps of:
providing a supporting arch having a reinforcing part intended to be embedded into the concrete and an exterior part intended to be taken down after the concrete has set, erecting the supporting arch on a pair of horizontally spaced supports so that the arch is supported on and extends between the spaced supports without intermediate support, placing shuttering in position on the arch, and embodying at least the reinforcing part of the arch in concrete to constitute the deck of the bridge which is formed by a ribbed slab, by girders connected by a slab or by at least one box, said part of the arch embodied in the concrete providing supporting reinforcement in the final bridge structure.
providing a supporting arch having a reinforcing part intended to be embedded into the concrete and an exterior part intended to be taken down after the concrete has set, erecting the supporting arch on a pair of horizontally spaced supports so that the arch is supported on and extends between the spaced supports without intermediate support, placing shuttering in position on the arch, and embodying at least the reinforcing part of the arch in concrete to constitute the deck of the bridge which is formed by a ribbed slab, by girders connected by a slab or by at least one box, said part of the arch embodied in the concrete providing supporting reinforcement in the final bridge structure.
2. A method according to claim 1, wherein precast concrete slabs are placed, after erection of the arch, at the lower part of the reinforcing parts, so as to serve as a bottom closure for the shuttering.
3. A method according to claim 2, wherein the precast slabs are placed in such a manner as to provide a platform allowing the remainder of the reinforced concrete superstructure of the work to be completed easily.
4. A method according to any one of claims 1 to 3, wherein the reinforcing part comprises a series of lattices of the same shape as the bridge girders and resting on the final piers.
5. A method according to any one of claims 1 to 3, wherein the exterior part of the arch is situated above the reinforcing part and is composed of lattice work in tall sections integral with the reinforcing part as incorporated in the concrete, the reinforcing and exterior parts forming an assembly with sufficient rigidity to prevent excessive deformation of the arch under the weight of the fresh concrete.
6. A method according to any one of claims 1 to 3, wherein the exterior part of the arch is situated below the reinforcing part and is composed of lattice work in tall sections integral with the reinforcing part as incorporated in the concrete, the reinforcing and exterior parts forming an assembly with sufficient rigidity to prevent excessive deformation of the arch under the weight of the fresh concrete.
7. A method according to any one of claims 1 to 3, wherein the two parts of the arch are integrated by producing an arch consisting of small one-piece girders for the exterior part and the reinforcing part, separation of the two parts being obtained by cutting out the exterior part of the arch after the concrete of the superstructure has hardened.
8. A method according to any one of claims 1 to 3, wherein the two parts of the arch are composed of small bolted girders, so that the exterior part may be easily detached after the concrete of the superstructure has hardened.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE6045795A BE849585A (en) | 1976-12-17 | 1976-12-17 | PROCESS FOR THE EXECUTION OF REINFORCED CONCRETE BRIDGES WITH BEARING FRAMEWORK AND BRIDGES OBTAINED IN THIS MANNER |
| BE6/45795 | 1976-12-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1085111A true CA1085111A (en) | 1980-09-09 |
Family
ID=3874709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA293,088A Expired CA1085111A (en) | 1976-12-17 | 1977-12-14 | Method of constructing reinforced concrete bridges and bridges constructed thereby |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US4192120A (en) |
| BE (1) | BE849585A (en) |
| CA (1) | CA1085111A (en) |
| CH (1) | CH619013A5 (en) |
| DE (1) | DE2756255A1 (en) |
| ES (1) | ES464904A1 (en) |
| GB (1) | GB1577586A (en) |
| IT (1) | IT1091272B (en) |
| NL (1) | NL7713816A (en) |
| OA (1) | OA05827A (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3211790C2 (en) * | 1982-03-30 | 1985-05-02 | Ulrich Dr.Ing. e.h. Dr.Ing. 8000 München Finsterwalder | Tension band bridge |
| US5338499A (en) * | 1989-09-26 | 1994-08-16 | Gerestek Oy | Method for the fabrication of a composite structure |
| DE19962608C2 (en) * | 1999-12-23 | 2003-10-23 | Ibb Ingenieur Bruecken Und Tie | Procedure for the construction of WIB superstructures |
| US20030154662A1 (en) * | 2000-10-30 | 2003-08-21 | Andersen Corporation | Hollow profile decking system comprising plank and anchor using anchor flange construction |
| CN100357524C (en) * | 2005-09-26 | 2007-12-26 | 重庆交通学院 | Reinforcing method for long-span flat arch bridge |
| CN102409855B (en) * | 2011-09-29 | 2013-11-27 | 中铁三局集团有限公司 | Pouring method for box-shaped side girder type channel beam |
| CN104612058B (en) * | 2014-12-26 | 2016-05-25 | 中铁大桥勘测设计院集团有限公司 | A kind of construction method of buckstay flexible arch bridge |
| CN105839541B (en) * | 2016-04-29 | 2023-06-09 | 贵州大通路桥工程建设有限公司 | Construction method and structure of No. 0 section non-welding bracket of rigid frame bridge |
| CN108385535B (en) * | 2018-04-02 | 2020-03-17 | 中冶建工集团有限公司 | Construction method for closure section of bridge rigid frame |
| CN108385534B (en) * | 2018-04-02 | 2020-04-14 | 中冶建工集团有限公司 | Installation method of weight device for folding rigid bridge frame |
| CN108487068B (en) * | 2018-04-02 | 2020-03-13 | 中冶建工集团有限公司 | Method for dismantling rigid frame weight device of bridge |
| CN108385536B (en) * | 2018-04-02 | 2020-04-14 | 中冶建工集团有限公司 | Weight pressing method for folding rigid frame of bridge |
| CN108487083B (en) * | 2018-04-02 | 2020-03-31 | 中冶建工集团有限公司 | Construction method for bridge abutment lap joint of bridge rigid frame |
| CN111155432A (en) * | 2019-12-31 | 2020-05-15 | 中交路桥华南工程有限公司 | Concrete pouring construction method of cast-in-place box girder |
| CN113389142A (en) * | 2020-03-13 | 2021-09-14 | 中交路桥建设有限公司 | Continuous pumping jacking and linear control method for single-side arch rib of steel pipe concrete arch |
| CN112176888B (en) * | 2020-09-24 | 2021-05-14 | 保利长大工程有限公司 | Reinforcing method for arch back enlarged section structure of old stone arch bridge |
| CN112921812B (en) * | 2021-01-25 | 2022-09-06 | 太仓市路桥工程有限公司 | Bridge construction method |
| CN114045742B (en) * | 2021-08-13 | 2024-07-09 | 中铁三局集团有限公司 | Construction method of bridge abutment of large-span inverted siphon pipe bridge |
| CN115305831B (en) * | 2022-09-16 | 2025-01-28 | 中交一公局第五工程有限公司 | Installation and construction technology of a steel box tied arch bridge |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1121313A (en) * | 1914-12-15 | Wilbur J Watson | Reinforced concrete construction. | |
| US541213A (en) * | 1895-06-18 | Bridge construction | ||
| US591949A (en) * | 1897-10-19 | George m | ||
| US762361A (en) * | 1904-01-25 | 1904-06-14 | Joseph B Strauss | Bridge. |
| US820921A (en) * | 1906-02-26 | 1906-05-15 | George M Cheney | Concrete-bridge reinforcement. |
| US1074268A (en) * | 1912-03-29 | 1913-09-30 | Charles D Kelly | Concrete arch. |
| DE404002C (en) * | 1921-07-17 | 1924-10-10 | Louis Charles Dalens | Construction method for arches made of reinforced concrete |
| DE448746C (en) * | 1924-07-31 | 1927-09-26 | Karl Johan Ljungberg | Reinforced concrete arches for bridges and similar structures with reinforcement serving as a supporting structure |
| US1728265A (en) * | 1926-06-16 | 1929-09-17 | Cement Gun Contracting Company | Floor construction and method of producing the same |
| DE822556C (en) * | 1949-04-01 | 1951-11-26 | Hermann Walter Gehlen Dipl Ing | Process for the production of girder bridges from reinforced concrete |
| US2786349A (en) * | 1951-01-16 | 1957-03-26 | Coff Leo | Prestressed concrete building |
| US2844024A (en) * | 1954-10-21 | 1958-07-22 | Mcdonald James Leonard | Combination preformed and cast-in-situ reinforced flooring structure |
| US3113402A (en) * | 1960-12-09 | 1963-12-10 | Donald H Butler | Slab construction |
-
1976
- 1976-12-17 BE BE6045795A patent/BE849585A/en not_active IP Right Cessation
-
1977
- 1977-12-05 GB GB50536/77A patent/GB1577586A/en not_active Expired
- 1977-12-09 ES ES464904A patent/ES464904A1/en not_active Expired
- 1977-12-12 CH CH1523777A patent/CH619013A5/en not_active IP Right Cessation
- 1977-12-12 US US05/859,529 patent/US4192120A/en not_active Expired - Lifetime
- 1977-12-14 CA CA293,088A patent/CA1085111A/en not_active Expired
- 1977-12-14 NL NL7713816A patent/NL7713816A/en not_active Application Discontinuation
- 1977-12-16 IT IT69814/77A patent/IT1091272B/en active
- 1977-12-16 DE DE19772756255 patent/DE2756255A1/en active Granted
- 1977-12-16 OA OA56344A patent/OA05827A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1577586A (en) | 1980-10-29 |
| IT1091272B (en) | 1985-07-06 |
| ES464904A1 (en) | 1978-09-01 |
| DE2756255A1 (en) | 1978-06-29 |
| OA05827A (en) | 1981-05-31 |
| DE2756255C2 (en) | 1987-06-19 |
| NL7713816A (en) | 1978-06-20 |
| US4192120A (en) | 1980-03-11 |
| BE849585A (en) | 1977-04-15 |
| CH619013A5 (en) | 1980-08-29 |
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